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首页> 外文学位 >Maximizing water recovery during reverse osmosis (RO) treatment of Central Arizona Project (CAP) water.
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Maximizing water recovery during reverse osmosis (RO) treatment of Central Arizona Project (CAP) water.

机译：在亚利桑那州中部项目（CAP）水的反渗透（RO）处理过程中最大化水的回收率。

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摘要

entral Arizona Project water was treated using slow sand filtration (SSF) and reverse osmosis (RO) in series. Additional desalination water was recovered from RO brine using the vibratory shear-enhanced processing (VSEP RTM; New Logic, Inc.). SSF removed 90% of the turbidity in raw CAP water. SSF decreased total organic carbon by almost 20%. After a little more than a year of continuous operation, performance of the RO system declined noticeably, as indicated by a rapid decrease in membrane permeation coefficient and an increase in salt flux. Foulant scrapings contained both clay material and large amounts of unidentified organics. Alternative hypotheses regarding major sources of membrane foulants are discussed in this study.;Water lost as brine was reduced from 20% to 2-4% via post-RO VSEP treatment. Estimated costs were compared to those of a no-VSEP option in which disposal of the entire RO brine flow was required. The total annualized cost of brine treatment was fairly insensitive to recovery during VSEP treatment in the range 80-90%, and the period of VSEP operation between cleanings in the range 25-40 hrs. These values define a fairly broad window for near optimal VSEP operation under the conditions of the study. The cost of VSEP treatment to minimize brine loss was estimated at
机译：使用慢沙过滤（SSF）和反渗透（RO）串联处理亚利桑那州中部项目水。使用振动剪切增强处理（VSEP RTM； New Logic，Inc.）从反渗透盐水中回收了更多的淡化水。 SSF去除了原始CAP水中90％的浊度。 SSF使总有机碳减少了近20％。经过一年多的连续运行后，反渗透系统的性能明显下降，这表现为膜渗透系数的迅速降低和盐通量的增加。污垢刮屑包含粘土材料和大量未识别的有机物。在这项研究中讨论了有关膜污染物质主要来源的其他假设。通过RO VSEP处理，盐水损失的水从20％减少到2-4％。将估算的成本与无VSEP方案的成本进行了比较，后者需要处理整个反渗透盐水。盐水处理的年化总成本对VSEP处理期间的恢复在80-90％的范围内不敏感，并且两次清洁之间的VSEP操作时间在25-40小时之间。这些值为研究条件下接近最佳的VSEP操作定义了一个相当宽的窗口。估计将盐水损失降至最低的VSEP处理成本为

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  • 作者

    Yenal, Umur.;

  • 作者单位

    The University of Arizona.;

  • 授予单位 The University of Arizona.;
  • 学科 Engineering Environmental.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 242 p.
  • 总页数 242
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境污染及其防治;
  • 关键词

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